Fig. 2
Histopathological findings. a Epidermis with regular acanthosis and spongiosis. Dermis with lympho-histiocytic infiltrate in perivascular and periadnexial patterns, congestion and enlargement of vessels, and extravasation of erythrocytes (haematoxylin-eosin, original magnification ×40). b Granulomas with epithelioid histiocytes, associated with discrete oedema and infiltration by lymphocytes (haematoxylin-eosin, original magnification ×200). c. Fite-Faraco staining showing a nerve circumscribed by lympho-histiocytic infiltrate with grouped acid-fast bacilli (original magnification ×1000). d Positive anti-BCG staining (original magnification ×400)